scsi: ufs: ufs-pci: Correct check for RESET DSM

dsm_fns is a bitmap, and it is 0-indexed according to the check in
__intel_dsm function. But common initialization was checking it as if it
was 1-indexed. This patch corrects the discrepancy. This change won't break
any existing calls to the function, since before the change both bits 0 and
1 were checked and needed to be set.

Link: https://lore.kernel.org/r/20220728111748.v3.1.I22460c4f4a9ccf2c96c3f9bb392b409926d80b2f@changeid
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Daniil Lunev <dlunev@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>